Clutching device.



, PATENTED MAY 21, 1907. F. BAILEY dz F. H. JACKSON.

GLUTCHING DEVICE.

APPLICATION FILED 56V.

2 SHEETS-SHEET 1.

PATENTED MAY 21, 1907.

F. BAILEY 6: F. H. JACKSON.

GLUTGHING DEVICE.

APPLICATION FILED HOV. 30, 1908.

2 SHEETS-SHEET 2.

&

UNITED sures PATENT OFFICE. I

FRANK BAILEY AND FREDERICK HENRY JACKSON, OF LONDON, ENGLAND. I

CLUTCHING DEVICE.

Specification of Letters Patent.

Application filed 30, 1906. Berlnl No. 845,795-

To all whom it may concern:

Be it known that we, FRANK BAIIEJY and FREDERICK HENRY JACKSON, subjects of the King of Great Britain and Ireland, and residin at 64 Bankside, in the county of London, lngland, have invented new and useful Improvements in Clutching Devices Adapted for Use in Communicating Rotary Motion and in Controlling the Transmission Thereof, of whichthe following is a specification.

This invention relates to the transmission of rotary motion by means of apparatus adapted to act as a positive clutch or to 0 erate on the principle of the hydraulic clutc the motion in the latter case being communicated through .the medium of a li uid or other fluid which is confined, partiall confined or practicallyuncon'fined, accor ing to whether it is desired that the motion should be transmitted at the same speed, transmitted at a reduced speed or not transmitted.

Apparatus constructed in accordance with our resent invention is capable of transmitting motion at an desired ratio between full slip and fiill drive and, upon reaching the last mentioned state, of changing from a hydraulic clutch to a positive ormechanical clutch.

In the accompanying drawin Figure 1 is a transverse sectionon the inc x-x in Fig. 2, Fig. 2 is a lo itudinal section on the line y-'y in Fi 1 o clutch apparatus constructed accor ing to our improved method; Fig. '3 being a sectional plan and Figs. 4, 5 and 6, detail views hereinafter more particularly described.

According to the mode of carrying out our invention, illustrated in the accompany' drawings, the device comprises a casing formed with a chamber a which incloses a closely fitting circular disk B; the said chamber having one or more enlargements 0 a circular but eccentric character. The disk B is formed with radial slots b in which slablike pistons O slide; the sides of'the said pis, tons closely fitting the inner sides of the casing. When the disk B revolves in relation to the casin A or the casing revolves about the disk, as t e case may be, the istons C if uncontrolled in the manner ereinafter de scribed, sweep the eccentric or other enlargegieent or enlargements of the central cham- The disk B is mounted upon a hollow shaft D and is provided with radial assages whereby communication is esta lished between the peri heral exterior of the disk and the interior 0 the no ow shaft; such com -munication being, however, under the control of a iston-valve with which the interior of t is shaft is fitted.'

The inner sides of the slab-like istons C are formed with stems c which I'OJGCt radially inward, toward the axis 0 the disk B,

and protrude into the interior of the hollow shaft D. Op osite the piston-valve E is a disk 2 adapte to press against and friction ally to engage the sides of the said stems c when the valve is full open, as shown in Fig. 5, with the effect tliat the pistons C are, under such conditions, held out of operation. The stems before referred to and the piston- Patented May 21,1907. 7

valve E are moreover formed in such a manner in relation to one another that, cutting off the parts b of the radial passages b, the piston-valve E may be further advanced so as to intercept the inward movement of the piston-stems c and thus, by holding the pistons O in their protruded positions, as shown in Fig. 4, to revent the disk B in whichthey are mounte' being rotated within the circular chamber. Fig. 6 is an elevation of the piston C showing the shoulder c with which -the valve E enga es.

The action of the apparatus is as follows 2- The circular casing A with its enlargement or enlargements, as also the hollow shaft D, having been charged with oil or other suitable liquid or, fluid, which may be introduced through 0 eningso in the casing, the disk with its sliding pistons C is free to rotate within the casing so long as the piston-valve E remains open as shown in Fig. 5; the fluid circulating to and fro through the radial assages 6 formed in the body of the I isk. When, however, the piston-valve E is closed, so as to cut off communication through these passages, as shown in Fig. 4, the casing' A is caused to rotate with the 'disk B. -When communication through the radial passages b is partially intercepted by reason of'the piston-valve E being partially closed, as shown in Fig. 2, the rotative movement 0 the disk B is communicated to the casing A, or vice versa, but at a more or less reduce speed, according to the degree of throttling effected by the piston-valve. When it is desired to substitute a ositive or mechanical full drive for the h aulic full drive, the piston-valve E is a vanced so as to occupy the osition shown in Fig.4 and to intercept the inward movement of one or another of the stems c with which the inner sides of the slab-like pistons C are provided. Under such circumstances, the piston C pertaining to the piston-stem 0 so intercept-ed is retained in its protruded position in one of the eccentric enlargements in the casing; the disk B and its easing A thus becoming locked tocther and compelled to revolve in unison. t will be understood that these-elements pertain to the respective members of the clutch: one being in connection with the driving partmvhile the other is in connection with the driven part. 1

What we claim as our invention and desire to secure by Letters Patent, is:-

1. The herein described clutching device, comprising an eccentrically formed casing or chamber a disk incloscd by-said chamber slab-like pistons slidahly mounted in said disk 8. central chamberin said disk fitted with a piston or other suitable valve, and

passages which extend from the sa d central chamber to the periphery of the said disk,

- such passages terminating at their inner ends in ports capable of being controlled by the piston-valve, and o ening at their outer ends to the eccentricallv ormed casing or chamber.

2. In hydraulic clutch mechanism, the

combination with an eccentrieallv formed casing and a disk inelosed within said casing 0 against the internal periphery of the said 5 casing, substantially as and for the purpose described.

p 3. In hydraulic clutch mechanism the combination with an ececntrically formed casing and a disk inclosed within said casing 0 and furnished with slab-like pistons, of a con-v trolhng valve and a disk mounted on the eon-, trolling valve-spindle; the said disk being i adapted to engage with the piston-stems when the controlling valve is in position for 45 full slip, "substantially as and for the purpose herein described.

In testimony whereof we hai e signed our names to this specification in the presence of two subscribing witnesses.

FRANK BAILEY. i FREDERICK HENRY JACKSON.

Witnesses:

H. D. JAMESON F. L. RAM 

